Coolant feed for cutting tools interchangeably accommodated in a work spindle

摘要

The invention relates to a coolant feed for cutting tools interchangeably accommodated in a work spindle, with an axially displaceable coolant tube which is arranged concentrically in the work spindle and at the end face is connected in a fluid-tight manner to the coolant bore of the tool and at the other end is connected to a coolant source, the tool (7) to be supplied with coolant having coding (8) in operative connection with the coolant tube (3), and the coolant tube (3) being rotatably accommodated at a bearing point (18) outside the spindle by an axially displaceable bearing (19) which is connected in a circuit to the machine control system and can be moved temporarily into a position sealing off the bearing point (18) from the coolant inlet (30), in which arrangement the coolant tube (3) is preferably surrounded by a bore (4), to which compressed air can be admitted, and can also be connected to a compressed-air source (35) allocated to the coolant inlet (30), and a closable leakage discharge (10) is provided in the work spindle (1) in the area of the connection between tool (7) and coolant tube (3). <IMAGE>